Brake-shaft support



Sept. 17, 1929. V. BENDIX BRAKE SHAFT SUPPORT Filed Dec. 29, 1926 ATTORNEY INVENTOR VINCENT BENmx Patented Sept. 17, 1929 UNITED STATES PATENT voFFlcI-LH VINCENT BENDIX, OF CHICAGO, ILLINOIS, ASSIGNOR TO BENDIX BRAKE COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS BRAKE-SHAFT SUPPORT Application filed December 29, 1926. Seriall No. 157,715.

This invention relates to supports for shafts and the like, and is illustrated as embodied in supports for the shafts of the cams or other operating devices for automobile brakes. An object of the invention is to provide :IIL inexpensive but durable support, which will hold the shaft lirmly, and which preferably is arranged to permit the shaft to shift bodily t'o center or balance the cam or its equivalent.

Each of the rillustrated embodiments includes a pair of. members, preferably metal stampings, providing spaced bearings for the shaft. Various features of novelty relate to supporting' the members to shift with the shaft., to forming the stampings with integrally-drawn sleeves or bearings for the shaft, to an arrangement of springs to hold the entire assembly under tension, and to various desirable details of construction which will be apparent from the following description of several illustrative embodiments of the invention shown in thc accompanying drawing, in which:

Figure 1 is a vertical section through the brake itself, just'inside the head of the brakedrum, showing the brake shoes in side elevation;

Figure 2 is a partialsection through the novel shaft support, on the line 2-2 of Figure 1; and

' Figures 3, 4, 5, and 6 are respectively views corresponding to Figure 2, but showing modified constructions.

The brake shown in Figure 1 includes a rotatable drum 10, at the open side of which is a backing plate or other stationary support 12, and within which are arranged-an auxiliary shoe 14 anchored on a pivot 1 6 carried by plate 12 and a secondary shoe 18 anchored on a pivot 20 and a primary shoe 22 connected to shoe' 18 by a floating pivot 24.

The brake is applied by means such as a cam 26, against the resistance of a return spring 2S, secondary shoe 1S being applied by the primary shoe 22 against the resistance of an auxiliary return spring 30. The particular brake illustrated is constructed substantially as more fully described in Patent No. 1,567 ,716, granted Bendix Brake Company on su Jport.

December 29, 1926, on application of A. Y. Dodge. I f

The present invention relates to novel means for supporting a shaft 32 for operating the cam 26 or its equivalent, whether or not used with the particular brake illustrated.

In the arrangement of Figure 2, shaft 32 is supported by intcgrallydrawn sleeves or bearings 34 formed in parallel members such as metal stampings 36 and 38, which are shown as being alike and interchangeable. The stampings are spaced apart by enlarged portions or collars formed on'studs or posts 4() on opposite sides of shaft 32, and which are permanently secured to the stamping 38 by having their ends riveted over to form heads 42.

Stamping 36 is movably arranged on the threaded reduced-diameter ends of posts4() and frietionally contacts the support plate 12. Nuts 46, threaded on the reduced portions of the posts, are providedwvith integral collars or spacers 44, Washers 54 being sleeved thereover. Locknuts 52 may be provided if desired.

' Nuts 46 engage washers 54 lying flat against the outer face of the backing kplate 12, and cooperating with member 36 to grip plate 12 frictionally, the frictional resistance being limited by the spacers 44. The opening 58, througlrivhich passes shaft 32 and the bearing 34 formed on member 36, is also large enough to permit the described shifting of the haft 32 may be groovcd to receive a snapring engaging the end of the bearing 34 of member 36, to prevent axial shifting of the shaft, and is' shown serrated to receive an 0perating lever 62.

The ent-ire support is held under spring tension, by 'coil springs 64 sleeved on studs 40 and confined between members 36 and 38. Springs 64 act directly on member 36, and indirectly through member 38 and studs 40 on Washers 54, to urge member 36 and Washers yieldingly against opposite sides of plate The arrangement of Figure 3 differs from that of Figure 2 in that the member 66, corresponding to member 38, is not formed with a bearing for shaft 32, While athird member or stamping 68 engaging member 36 at its ends is formed at its center with bearing 70 for the shaft which extends in the direction of cam 26. Also the bolts 'i' 2, corresponding t ,A to studs or posts 40, have heads 74-engaging the Washers 54, and have nuts 76 at their inner ends clamping member 66 against shoulders on the bolts.

ln the arrangement of Figure 4, member 78, corresponding to member 38,` is bent into engagement with member 36 at its' ends, and

v springs 64 are conned between member 78 and stamped Washers or stops l8O held on the ends of bolts'82 (corresponding to bolts 72).

by cotter pins 84. In Figure 5, member 86 is bent at its ends against member 36, and both of them are permanently secured 4to studs or bolts 88 by riveting over the ends to form heads 90. In this arrangement, nuts 92 act directlyl to clamp Washers 54, and members 3G and 86, against opposite sides of plate l2.

In Figure 6, member 94, corresponding to member 38, is held by bolts 72 .the same as member 66 in FigureB, and there is a third member or stamping 96 lying vflat against member 36 and which is also formed with .a bearing 34 for shaft 32, except that the stamping 9G is turned over so that its bearing 34 extends toWard cam 26.

hile several illustrative embodiments ,have been described in detail, it is not my in-v tention to limit the scope ofthe invention to those particular embodiments, or otherwise than by the terms l claim: 1. A shaft support comprising, in combination, a supporting plate provided'with of the appended claims'.

40* openings, a pair of spaced members provi-ded With alined shaft bearings 'and the iirstof Which lies along said plate, studs carried by the other of said members and passing through said first member and through the openings, means on said studs and engageablel with the plate on the side opposite said first member, and coil springs sleeved on said studs and compressed between said members and urging the first member directly against the plate and acting through the other member and through the studs 'to 'urge said means ramasse permit said members to shift as a unit with respectto the plate.

' 3. A shaft support comprising, in 'combii cluding springs engaging said members and urging the first member directly against the plate and also acting to urge said means against the plate, the spaced members being lshiftable with respect to the plate but nor- .mally frictionally heldv in place bysaid springs.

4. A support comprising, in combination, a plate formed With an opening, a pair -of spaced -supporting members, a stud carried by one of said members and passing through the other and through the opening, means at the end of the stud frictionally engaging the plate opposite the other of said members, and a coil spring sleeved on the stud and coniined between said members to hold atleast one member and said means frictionally against the opposite sidesof the plate to position the supporting members with respect thereto while permitting resisted bodily shifting movement thereof with respect to the plate.

5. A support comprising, in combination, a plate formed with an opening, a pair of supporting members arranged upon one side of the plate, a stud engaging said members and passing through'the opening, ineans'at the end of the stud engaging the plate upon the side Opposite said members, and a` coil spring sleeved on V the stud andy exerting pressure thereupon holding said' means fricti-onally against one side of the plate and one of said members frictionally against the opposite side of the plate to adjustably position the said members With respect to the plate While permitting resisted shifting movement thereof as a unit over the plate. i

6. A shaft support'comprising, in combination, 'a pair of stampings formed with eoaXial integrally-drawn sleeves forming bearings in Which the shaft may be directly journalled, a stationary support, and spaced tensioned fastenings securing said st ampings upon one side of the stationary support in frictioiial engagement therewith whereby theymay be shifted resistingly bodily as a unit thereover.

7. A shaft support comprising, in combination, a pair of stampings formed` \vith coaxial integrally-drawn sleeves forming bear- -ings in which theshaft may be directly jour-A nalled, a stationary support, and meansholding said stampings in abutment and .frictionally against one side of the stationary support to position the same with respect to 'the support While permitting resisted bodily shifting of the stampings as a unit over said support while preventing relative shifting of said stampings with respect to each other.

8. A shaft support comprising, in combi-l nation, a pair of stampings formed with coaxial integrally-drawn sleeves forming bearyings in which the shaft may be directly jourextending coaxial integrally-drawn sleeves in which the shaft may be directly journalled, and means holding the two stampings asa unit against one side of the plate in a manner permitting them to shift as a unit.

10. A shaft support comprising, in combination, a pair of stampings formed with coaxial. integrally-drawn sleeves in 'which the shaft may be directly journalled, a third stamping having an integrally-drawn sleeve coaxial with respect to said first sleeves, and

means for supporting the three stampings as a unitin a manner permitting them to shift as a unit.

11. A shaft support comprising, in combination, two stampings spaced apart at least at their centers and there formed with coaxial integrally-drawn sleeves in which the shaft may be directly journalled, a supporting plate having a shaft opening arranged opposite said sleeves, fastening devices scuring said stampings together and to the plate in such a manner as to permit resisted bodily shifting of the stampings as a unit over the plate.

12. A shaft support comprising, in combination, two stampings spaced apart throughout and formed between their ends with coaxial integrally-drawn sleeves in y which the shaft may be directly journalled,

' a plate having a shaft opening arranged opposite the shaft openings through the sleeves and fastening devices holding said stampings f together in spaced apart relationship and sef curing them frictionally as a unit against one vside of the plate in such a manner as to per- -mit resisted bodily shifting of the stampings v oyer 4the plate.

`1:3.'A shaft support comprising, in comp bination with a stationary plate having a shaft opening, a pair of stampings shaped to `'provide a shaft bearing of substantially greater width than their combined thickness,

mit resisted bodily shifting of the stampings as a unit with respect to the plate.

14. A shaft support comprising, in combination with a stationary plate having a shaft opening, a pair of stampings shaped to provide a shaft bearing of substantially greater Width than their combined thickness, said bearing extendingjat one end into the opening of the plate and means extending through the stampings and the plate securing the stampings together and holding them frictionally as a unit against one side of the plate while. permitting resisted bodily shift-I ing of the same as a unit over the plate.

15. A shaft support comprising, in combination with a stationary platev having an oversize shaft opening, a plurality of metal stampings arranged in abutment and in spaced apart relationship and provided with integrally formed aligned sleeves adapted to serve as a shaft bearing, 'securing means holding said stampings together and holding them as a unit frictionally against one. side of the plate withtheir shaft bearing arranged opposite the opening through the plate and in such a manner as to permit bodily shifting ofthe stampings as a unit with respect to the plate.

16. A shaft support comprisino', in'comaving an bination with a stationary plate oversize shaft opening, a plurality of shaft supporting membersprovided with aligned integral shaft bearing portions of substantially greater combined width than the combined thickness of said members, means holding said members yieldingly frictionally against one side of the plate with the shaft bearings arranged opposite the opening through the plate, and a stub shaft extending through the plate and mounted in said bearings provided with a torque applying part adjacent one end upon one side of the plate and a torque transmitting part adjacent the other end 'upon the opposite side of the plate.

17. A shaft support comprising, in combination with a stationary plate having an oversize shaft opening, three juxtaposed stampings provided with aligned integral bearing sleeves arranged upon one side of the plate with the sleeve of one stamping extending into the opening of the plate, and means holding said stampings together as a unit and yieldingly frictionally against one side of the plate permitting resisted bodily shifting of the stampings as a unit with respect to the plate.

In testimony whereof, I have hereunto signed my name. y VINCENT BENDIX.

and means securing said stampings as a unit l upon one side of the plate with their shaft.

bearin positioned opposite the opening throng the plate in such a manneras to per- 

